Improvement in grates for brick-kilns



A. HALL.

GRATES FOR. BR'ICK-KI LNS. No.179,914. Patented July18,1876.

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N-PEI'ERS, PNOTD-UTNOGRAPHER, WASHINGTON. D. C.

UNI ED STATES PATENT OEEIo ALFRED HALL, OF PERTH AMBOY, NEW JERSEY.

IMPROVEMENT IN GRATES FOR BRICK-KILNS.

Specification forming part of Letters Patent No. 179.914. dated July 18,1876; application filed June 20, 1876.

To all whom it may concern:

Be it known that I, ALFR D HALL, of Perth Amboy, in the county ofMiddlesex and State of New Jersey, have invented a new and ImprovedMouth-Grate for Brick-Kilns, of which the following is a specification:

Figure 1 is a vertical section on line 00 a; in Fig. 2. Fig. 2 is asection on line 3 3 in Fig. 1.

Similar letters of reference indicate corresponding parts.

My invention consists in a hinged front section of a grate, which takesthe place of the ordinary dead-plate and door, so arranged as to becapable of being lowered into a horizontal position when the kiln ischarged, but may be readily raised into an inclined position, so as topartially close the mouth of the kiln.

A is the mouth of an ordinary brick-kiln, and B are the grates whichsupport the body of the fire. 0 is a section of grate, which is hingedat a to plates I) b, which are attached to the walls of the kiln. A bar,D, is placed across the mouth of the kiln, which sustains the grate (3,when it is let down into a horizontal position. E is a pawl-rod, whichhangs loosely from the under side of the grate O, and when the grate israised this rod engages withthe bar D, holding the grate in position.The front end of the grate U terminates in a plate, 0, for conveniencein firing, and also to retain the coals which are at the top of thefire.

When it is desired to charge the fire, the pawl-rod E is tripped, whenthe grate 0 falls,

that the fire'may be readily cleaned without lowering the grate, thusavoiding the admission of a volume of cold air, also obviating theexposure of the fireman to the intense heata thing which is inevitablewhen doors are used.

Another advantage of great importance is,

that the quantity of air admitted to the kiln through and above thegrate is such as to permit the kiln to burn evenly from front to rear. Ialso effect a saving in time and fuel, and produce brick of a uniformcolor and quality.

Having thus described my invention, I claim as new and desire to secureby Letters Patcnt 1. A mouth-grate for brick-kilns, which is hinged atthe rear end, the front end of which is capable of being raised from ahorizontal position, so as to nearly close the mouth of the kiln, asshown and described.

2. The combination of the grate O, hingeplates b b, bar D, pawl-rod E,and mouth A, substantially as shown and described.

ALFRED HALL.

Witnesses:

GEO. M. HOPKINS, ALEX. F. ROBERTS.

